body {
    margin: 0;
    padding: 0;
    background: #14495e;
  }

.controls {
  margin: auto;
  width: 50%;
  z-index: auto;   
}  

button {
  display: block;
  width: 8em;
  height: 3em;
  margin-top: 1em;
  margin-left: auto;
  margin-right: auto;
  font-family: Consolas;
  font-size: 1.5em;  
  z-index: auto;
}

button:hover {
  box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(170, 38, 38, 0.19);
}
  
.eyes {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    text-align: center;
  }
.eye {
    width: 240px;
    height: 120px;
    background: #fff;
    display: inline-block;
    margin: 40px;
    border-radius: 50%;
    position: relative;
    overflow: hidden;
  }

.ball {
    width: 80px;
    height: 80px;
    background: #000;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
  }